Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 9 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

8
3
4
9
1
6
7
2
5
9
7
6
8
2
5
3
1
4
2
1
5
7
3
4
9
       
      6
    
6
4
7
1
2
5
9
6
8
3
2
6
3
    
    
       
8
7
5
9
9
       
    
    
9
5
       
   6
       
       
   6
       
3
4
2
1
5
9
8
3
4
7
1
4
2
    
    
       
3
2
6
9
1
7
4
8
    
   6
       
    
   6
       
7
    
    
    
    
    
    
2
3
       
6
    
9

 

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